Improvement in cooking-stoves



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J. J. SAVAGE, OF TROY, NEW YORK.

Leners Patent Nt.' 91,875, dazed June 29, 1869.4

IMPROVEIWENT IN COOKING-STOVES.

VThe Schedule referred to in these Letters Patent and making part ofthe' same.

To all whom fit-may concern:

Be it-known that I, -.I. J. SAVAGE, of Troy, in the county ofRensselaer, and State of New York, have invented certain new! and usefulAImprovements in Cooking-Stoves; and I do hereby declare that thefollowing is a full and exact description of the same, reference beinghad to the accompanying sheets of drawingsmarked, respectively, A and B,and letters of reference marked thereon, making part of thisspecification, in which- Figure 1 is'a pelspective view of said improvedstove;

Figure 2 is a longitudinal vertical section thereof;

Figure 3 is a perspective view of one of the liningplates of fire-hoi;

Figure 4 is a modification in construction of .the fuel-door or cover; i

Figure 5 is a longitudinal vertical section of g. 4 and Y Figure 6 is avertical cross-section through the extended fire-box of said stove.-

The same letters refer to like parts in each of the said figures.

My invention isf4 an improvement in the cookingstove for which LettersPatentwere granted me, dated the 12th dayof February, 1867, and it isintended to furnish a more perfect supply of air to the burning fuel andcombustible gasesevolved therefrom, and alst` to otherwise make saidstove more perfect and convenient in its operation; and

The said invention consists in the construction, combination, andarrangement of certain devices with said cooking-stove, by means ofwhich a hot-air draught is so supplied as to quickly mix with thecombustible gases evolvedV from the burning fuel in the fire-boxthereof, and the air-draught thereinto, through the tire-grate, isheated, regulated, and equalized, and the feeding of fuel thereinto ismade more perfect and convenient, all in manner substantially ashereinafter fully described and shown. l

That others skilled in the art may make and use vmy said improvedlcooking-stove, I now proceed to fully describe its construction andoperation, which is as follows:

The fire-box A, over the fire-grate D, is extended outward therefrom,below and forward of the flamechamber C, thusV forming. a coking andfeeding-box thereof, which has its fuel-door-way P located below andforward of the darne-chamber C, substantially as shown in theannexed-drawings.

rIhe bottom part of said extension B is nngrated, and slopes toward thefire-grate D, to facilitate feeding of fuel thereon, and is providedwith lining-plates, as shown.

The fuel-door-way P is closed by a combined sliding and lifting-cover ordoor, constructed as follows:

The under, or lire-side thereof is made in two pieces,

F and F', which have sides, It k, substantially as shown in iig. 1 ortheir equivalents may be formed in the cover-plate G, as shown in figs.4 and 6.v Y

,The part Fof said under platehas a series of airdraught perforations, ee, and also lugs or hooks ss, which hook under fianges t t,substantially as shown in iig. 6, to thereby hold it in proper positionwhen drawn out. v

The top side of -said door i s made in two pieces, G and G'..

The partG projects over the front of part F, in manner about as shown,so as to leave an air-entrance opening thereunder,

The top and bottom plates G and F, and G and F', are now bolted togetherby bolts i., and hinged together by the hinges 1' t', thus forming adoor or cover for said door-way'P, and also forming the air-draughtpassage-way a, between said cover-plates, in manner substantially asshown in iigs. land 2 of the drawings. Y

This cover is now putin its place for use, by sliding it over saiddoor-way P, with the lug or hooks s s hooking under the flanges t t,aforesaid, until its rear part is under the edge of said door-Way, or soas to make 'a close joint -witl the front plate N, as shown.

When av re is to be started, or the condition ofthe lire on the grate Dascertained, said door or cover may then be drawn back, thus giving easyaccess. thereto; and wheny the re needs replenishing, the lifting-part GF, hinged to the `sliding part G and F of said door,

is lifted up and back, in manner as shown'by the dotted lines in Iig. 2,and the coked fuel in the extended fire-box B is then Vshoved back on tothefire-grate D.

A fresh supply of fuel being placed` therein, thetlifting-door isclosed, as before.

Air now enters said passage-way'a, is heated, and passes through theapertures e e, downward, in impinging jets or sheets, among, and quicklymixes with the combustible gases evolved from the igniting fuel in said@cking-box B, in manner substantiallyas shown by the arrows in fig. 2,so producing thereby more perfect combustion of said gases; theadmission of air thereto being controlled by a damper, J, so operated asto diminish or close said air-passage a.

A modification in the construction of the aforesaid door is shown infigs. 4 and 5, wherein the door is made only to` slide, having no hingedlifting-part, and the upper plate, G, is provided with sides 7c k.

'lhe under plate F has perforations e as before; and when said door isclosed, the under plate F makes a close joint with ,the perforated plateH, affixed to.

when the coking-box B has onlya sliding cover or door, is shown in fig.5 of the annexed drawings.

When the fuel on the {ire-grate D needs replenishing, the fuel-door F isslid open far enough to admit the pronged feeding-lever S into thecoking-box AB, to first loosen the coked fuel next the fire-box A.

The coking-box B is'then filled with fresh fuel, andv the door closed.

.In figs. 4 and 5, a device is shown, combined with the stove, forsupplying a hot-air draught to the solid fuel lying on the grate-bars ofthe fire-box; and the said device consists in an outer plate or casing,K, provided wth .end-pieces R R, andan-entrance apertures n fn, and isdivided by a vertical plate, c, which extends from-the upper edge of thebox down to near its bottom, so as to form thereby a downward and upwardair-draught passage-Way, b b', when said casing K is arranged-andsecured, by bolts or their equivalents, in its position under thecoking-box B, and in front of the ash-spaceE, 4so that the bottom sideof said cokingbox forms the top, and the front plate of the ash-spaceforms the rear part or side of said air-draught passageway b b',substantially as shown in said gs. 4 and'5, whereby the air-draught isheated in its passage therethrough, and better distributed at the underside of the dre-grate, thus producing equal combustion of the fuelthereon.

The shelf-plates L Lv are arranged above and forward of the 'fire-grateD and {ire-box A, at the top and sides or ends of the said extendedfire-box B, and at each side of the fuel-door-way P, so as to be level,or nearly so, with the fuel-door F G thereof', so that when closed, itthen forms, together with the parts L L, aforesaid, a convenient' shelfover the top and at the sides of the extended iire or coking-box B; andwhen said fuel-door is opened, to feed fuel'into the re-box B, then' thedoor and plates L L, together, form a shelf about the door-way P, sothat any fuel 'spilled in feeding, and caught thereon, can be brushedinto the r'e-box B.

An improvedmanner of constructing Vthe fire-box lining-plates is shownin iig. 3 of thelannexed drawings, wherein h hh are a series of shortribs or flanges,

-arrangedin parallel rows or lines, about an inch, more or less, apart,and each rib of the respective'rows placed in such relative positions toeach of the ribs of itsv opposite r\v, as to have its` joints or endscome opposite tothe central part of the ribs of its opposite row, or tobreak joints therewith; and, combined with said series of -ribs, thereis an interposed series of air-draught-apertures or slots,.g g, madethrough the plate. The said respective series of ribs and apertures arearranged in alternating succession over the fire-side of the re-plate,inmanner substantially as shown-in said iig. 3, thereby increasing' thestrength` and durability of the fire-plates and fire-box.

The extended [ire-box B is constructed with a close or ungrated bottom,while the fire-box A has a grated bottom, D, substantially as shown inthe drawings.l

By this particular construction offsaid lire-box B,

' fuel placed therein ignites and burns or cokes from the rear, next thefire-box A, and top, downward, gradually or slowly, to 4 the closebottom of saidlre-box B, so that the evolved combustible gases, in theprocess of coking the fresh supplyof fuel, pass np through the ignitingfuel, and thus are highly heated when they come in` contact with thejets or 'sheets of hot-draught air, through the perforations of theaforesaid airdraught plate F, which is so arranged over said firebox B,that the air-supply impinges inward and downward thereinto, nearly atright angles, or crosswise to the escaping currents of combustiblegases, and thus is made to mix quickly and intimately therewith, therebyperfecting vtheir combustion.

The coked fuel in the fire-box A is supplied with air through thetire-grate D, and burns from the firevgrate upward, in the usual manner,while the fresh fuel in the fire-box B is coking, wherewith to renewthejre in the fire-box A.

Having thus described my invention,

What .I claim, and desire to secure by Letters Pat- 1. The air-draughtpassage-way a, in combination with the movable door or cover G F of thefuel-aperture or door-Way P, of extended ire-box B, locatedsubstantially as described, for the purpose set forth.

2. v The arrangement-of the air-draught passage-Way a, directly over theextended tire-box B, substantially as described. Y

3. In combination with the extended fire-box B, located as described,the front plate N and fire-box A, the combined sliding and lifting-doorsG F and G F thereof, substantially as, and operating for the purposes'et forth.

4. In combination with the extended fire-box B, the air-draughtpassage-way a, thereover, and coverplate G, the perforated air-draughtplate F, arranged to operate at 0r over the top of said fire-box,substantially as descri ed.

5. The arrangement of the hot-air-draught passageway K b b', under theextended fire-box B, in combination therewith, and with the re-gr'ateD,and ashspace E, substantially as and for the purpose described.

6. The combination with each other of the extended' fire-box B, thehot-air-draught passage-way a thereover, and therhot-air-draughtpassage-Way K b b thereunder, when respectively and relatively arrangedwith vthe fire-grate D, ash-space E, fire-box A, and flamechamber O,substantially as and for the purpose described.

7. The combination of the series of herein-describedbreak-joint-arranged ribs or anges hh h, withA the series of aperturesor `slots g g, arranged in alternate succession, and combined with the{irc-box liningplates of stoves, substantially as described. 8. Thearrangement of the shelf-plates L L, above and forward of the fire-grateD, in combination with the tnel-door-way P, its door or cover F, andthereunder-extended fire-box B, substantially as described.

9. The combination of the close ungrated-bottom fire-box B, andair-draught chamber aftbereover, or its equivalent, with thegrated-bottom fire-box A, substantially as and operating for the purposedescribed.

J. J.. SAVAGE.

Witnesses:

Riom). Pansoorr, AUsTIN F. PARK.

